Okay, I rode him today (well, technically yesterday) around the arena. He did well. We just worked on walking and troting, listening to my leg cues, and sticking to the rails. I hosed off some dirt around his shoulders in my washrack that I had never used before and he did good there too. Even with Yuri freaking out next to him and the hose crazy and spraying everywhere.
I just don't understand how he can be so cam in a situation like that in the backyard then freak at a man hosing off his driveway. It just doesn't make sense. Hopefully I'll get him out tomorrow (today) and see if letting him sniff Bart's hair made a difference..